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(ModeL) L. M. BERRY.

STEAM INJECTOR Patented Feb. 21, 1888.

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LOUIS M. BERRY, OF READING, PENNSYLVANIA.

STEAM-lNJZECTOR.

SPECIFICATION forming part of Letters Patent No. 378,281, dated February 21, 1888.

Application filed December 1, 1887. Serial No. 256,618. (Modch) T0 a-Z'Z whom it may concern: I

Be it known that I, LOUIS M. BERRY, a citizen of the United States of America, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Injectors, of which the ibllowing is a specification, refer ence being had therein to the accompanying drawings.

This invention pertains to certain new and useful improvements in stearn-injectors.

The object of the invention is the provision of an automatic injector with an apertured cylinder or jacket connecting the steam-inlet tube and the lifting-tube, water being drawn in th rough said cylinder or jacket; also,a COIllbining-tube having apertures opening into an overflowchan1ber, whereby the starting of the injector is easily and readily effected.

The invention also consists in an improved overflow valve and pipe or chamber by means of which the operator can readily ascertain how the injector is working, and also provide means for the escape of steam when the overflow is choked.

To these ends the invention comprises the detail construction, combination, and arrangement of parts, substantially as hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional-view of my improved steam-injector. Fig. 2 is a vertical sectional view taken through the overflow-chamber,and Fig. 3is a detail perspective view of the apertured cylinder or jacket.

ieferring to the drawings A indicates the casting or tubular casing, provided at one end with a threaded extension, a, and in its upper surface with a steam-inlet, a, to which is connectcd,by means of a separable screw-threaded pipe-section, the steam-pipe, (not showm) while from the under side of the casting or casing is a branch, a to which is likewise connected the pipe leading from the well or supply of water, the inner end of said branch being curved, as shown. The delivery end a is also provided with apipe-section and coupling-nut for connecting the pipe leading to the boiler.

The casting or casingAis interiorly divided into three compartmentsthe steam-inlet chamher 2, the water inlet chamber 3, and the overflow-chamber 4, and has interior flanges or shoulders, 6.

B is the steamjct tube, provided with a flanged head fitting against the flange or shoulder 5 and a contracted inner end and central tapering aperture, as shown. cned portion of this steam-jet pipe is formed a screw-thread, b. Thisstearn-jet tube is held firmly in position by means of a plug, I), screwed into the end of the casing, and having an apertnred cylindrical extension bearing against the outer surface of the flanged end of said tube, as shown.

C- is the lifting-tube, having an outer tapering portion, a central aperture, an outer peripheral flange, 7, and a threaded extension, 8. Upon this lifting-tube is also formed, at a point adjoining the peripheral flange, a screwthread, 9.

To the threaded extension 8 of the liftingtube is connected one end of a widened cylindrical extension of a combining-tube, I), having a narrow tapering extension, upon which is formed a screw-thread for securing thereto the innerwidened portion of the delivery-tube E. Through the combining-tube and delivcry-tube there are of course formed narrow passages, as shown. In the widened cylindrical extension of the combining-tube D are formed two series of holes or apertures, 10, the holes ,or apertures of one series being formed on a line with the spaces between those of the other series. There are also formed four more or less) holes or openings 0 in the widened portion of the delivery-tube, as shown.

F is a cylinder or jacket aperturcd throughout its length, and provided at the ends with female screw-threads for screwing said ends to the steam-jet B and lifting-tube 0, thus completing the union between all of the tubes or jets of my injector and holding the tapered end of the steam-jet tube in close proximity to the bell-like opening of the lifting-tube. It will be seen that the apertnred cylinder or jacket F is located within the water-inlet chamber 3, and that the apertnred combiningtube is disposed within the overflow-chamber 4, the purpose of which arrangement will soon be apparent.

G is the overflow branch or pipe, formed or cast integral with the tubular casing A, the same being located over the'overflow-chamber Upon a thick- 4, and it has an upper cylindrical extension,

g, from the lower end of which lead two chambers or passage-ways, g 9, opening into a lower extension, 9, as shown. To the upper cylindrical extension, g, is secured a plug, 9 having a cylindrical portion extending into said extension, the upper inner wall-of which is curved, as shown.

In the upper wall of the overflow-chamber is formed a circular opening, wherein rests a ball-valve, H, as shown, the space between the upper portion of said valve and the curved wall of the plug 9 being equal to the diameter of either one of the chambers 9. To the lower extension, 9', of this overflow branch is secured the upper end of a funnel-like pipe or chamber, I, provided in its upper surface with a series of openings or apertures, t, and to the lower end of this funnel-like chamber is connected one end of a pipe for conveying away the overflow.

The operation is as follows: Steam being admitted through the steam-inlet pipe, will pass through the apertures of the cylindrical extension of the plug binto the steamj ct tube B, and, passing through the lifting-tube and out through the apertures of the elyindrical extension of the combining-tube,will raise the ball-valve from its seat and pass out through the overflow branch or pipe. Simultaneous with this operation a vacuum is formed in the water-inlet chamber, which will effect the raising of the water into said chamber,from which it will pass through the apertures of the cylinder or jacket F,and,together with the steam, will pass into the combining-tube, and at first a portion will pass out through the apertures of the cylindrical extension thereof on into the overflow, and steam and water will pass throughthedelivery-tube on into theboiler,any water remaining in the overflow-chamber being drawn through the apertures of the extensions of the combining and delivery tubes. \Vhen' the steam or steam and water passed from the overflow chamber, the ball-valve was raised from its seat its full extent, equal, as before stated, to the diameter of the chamher or passage-ways, and said overflow passed on through the funnel-like pipe or chamber into the pipe connected thereto.

The object of the funnel-like pipe or chamber is twofold: first, to permit the operator to ascertain by looking through the apertures thereof whether or not any water is passing out with the overflow-steam, and, secondly, when the overflow-pipe becomes choked, causing the backing of the steam and the seating of the valve, said steam is permitted to escape through the apertures in said funnellike pipe or chamber, thus not only preventing any interference with but providing for the uniformity of the working of the injector.

It will be seen that by removing the end plug, 2), the entire series of tubes from the steam-jet to the delivery-tube, inclusive, can be removed from the casing, the flanges or shoulders of said casing not interfering with the removal thereof. This is'a decided advantage in this class of inventions, because it is often desirable to remove all the tubes at one time for replacement of any of the worn parts.

From what has been said it will be seen that I have produced an automatic injector extremely simple in construction, one comprising means for effecting a ready and easy starting, one having a highly-efficient overflow located directly over the apertured extension of the combining-tube, and one having an apertured funnellike overflow pipe or chamber, which is a decided improvement in the art.

I claim as my invention- 1. As an improvement in steam-injectors, the overflow branch or pipe comprising two channels or passage ways and an upper cylindrical extension, and the ball-valve located in said cylindrical extension and having a movement about equal to the diameter of said channels or passage ways, substantially as shown and described.

2. The overflow branch or pipe having two channels or passageways, the ball-valve, and the funnel-like pipe or chamber having a series of apertures, substantially as shown and described.

3. As an improvement in injectors, the funnel-like pipe or chamber secured to the overflow branch or pipe and having a series of apertures, as shown,and for the purpose stated.

4. In a steam injector, the combination, with the casting or casing having an aperture in its upper portion, of the overflow branch or pipe having two channels or passage-ways and upper and lower cylindrical extensions, the plug screwed in the upper one of said extensions and having an inner curved wall, and the ball-valve normally resting on said aperture of the casing and having a limited movement insaid upper extension, substantially as shown and described.

5. The combination, with the casing, of the end plug having a threaded portion fitting a corresponding thread of said casing and an apertured extension, the steam inlet jet tube held by said plug and provided with a thread, the lifting and combining tubes, and the apertured cylinder or jacket secured to said steam-inlet j et-tube and to said'lifting-tube,

substantially as shown and described, said lifting-tube and cylinder or jacket and combining-tube being screwed together, as stated.

6. The herein-described improved injector, comprising the steam-inlet j et-tube, the apertured cylinder or jacket, the lifting, combining, and delivery tubes, the overflow branch or pipe having two channels or passageways, the ball-valve, and the funnel-like pipe, all constructed and arranged substantially as shown and described.

In testimony whereof I afflx my signature in presence of two witnesses.

LOUIS M. BERRY.

\Vitnesses:

J. Nora MOGILL, M. DOB-IAN. 

